At 4oC, water has minimum density and maximum volume.
At 4oC, water has minimum density and maximum volume.
The correct option is B False
Usually, we observe that things expand on heating and contract on cooling.
Water also follows this rule most of the time. If we cool water at room temperature, say 25o C, it will contract and reduce in volume. Since the mass of the water remains the same and the volume reduces, the density will increase. This goes on till 4o C. So far so good.
But when water is cooled beyond 4o C upto 0o C , we observe something strange. The water begins to expand! And the density will decrease. This is against what we normally see with substances like metals. We call this the anomalous expansion of water.
Density increases from 100o C to 4o C and then decreases from 4o C to 0o C. So, density is maximum at 4o C.
False
Usually, we observe that things expand on heating and contract on cooling.
Water also follows this rule most of the time. If we cool water at room temperature, say 25o C, it will contract and reduce in volume. Since the mass of the water remains the same and the volume reduces, the density will increase. This goes on till 4o C. So far so good.
But when water is cooled beyond 4o C upto 0o C , we observe something strange. The water begins to expand! And the density will decrease. This is against what we normally see with substances like metals. We call this the anomalous expansion of water.
Density increases from 100o C to 4o C and then decreases from 4o C to 0o C. So, density is maximum at 4o C.
